A new Department of Homeland Security intelligence bulletin warns it could be “impossible” to stop 3D-printed guns from being made, not to mention getting past security checkpoints.

A May 21 bulletin distributed to numerous state and federal law enforcement agencies and obtained by FoxNews.com states that the guns, which can be made by downloading blueprints into cutting edge computers that mold three-dimensional items from melted plastic, “poses public safety risks” and are likely beyond the current reach of regulators. The guns threaten to render 3D gun control efforts useless if their manufacture becomes more widespread.

“Significant advances in three-dimensional (3D) printing capabilities, availability of free digital 3D printer files for firearms components, and difficulty regulating file sharing may present public safety risks from unqualified gun seekers who obtain or manufacture 3D printed guns,” warns the bulletin compiled by the Joint Regional Intelligence Center.